???
I don't see why the same number in a row is any more unbelievable than any other sequence of numbers.
Seeing 29,29,29,29,29,29,29 is just is likely, or "unlikely", as 6,7,2,5,4,23,30, which I may have happened to see once...
At any given moment looking at a roulette history the chance of that specific set of 7 numbers is 1 in whatever billion.